[mothered]

1: does the empty box method work with all resellers (as long as the product has not been packaged by the reseller) and this even with a new account?

Impossible to speak for each and every seller.

In terms of the account, give It some credibility by making a legit purchase prior to the SE.

2: then concerning the CPU I would have preferred EB another more expensive one but I searched everywhere on the internet and it seems that the weight of the product includes a small decorative box around it. This makes the weight of the CPU more than 300 grams which makes it technically ineligible for the empty box method... But a CPU never weighs that much and its weight is always around 40-60 grams. Do you think that despite the fact that this information is nowhere to be found on the internet it is possible to still use the EB method?

300 grams Is the shipping/gross weight. The CPU Is well under the 120 gram bracket.

Be sure It cannot be viewed externally without opening the box.

3: Finally, do you think it is possible to EB the two RAM sticks since they are two separate objects?

It's best to partial It.

There's a greater chance of a picking & packing error when multiple Items have been ordered.